package com.heima.wemedia.service.impl;


import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.client.user.IUserClient;
import com.heima.model.common.dtos.AuthDto;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.dtos.WmLoginDto;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.common.pojos.wemedia.WmUser;
import com.heima.utils.common.AppJwtUtil;
import com.heima.utils.common.MD5Utils;
import com.heima.wemedia.mapper.WmUserMapper;
import com.heima.wemedia.service.WmUserService;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;

@Service
public class WmUserServiceImpl extends ServiceImpl<WmUserMapper, WmUser> implements WmUserService {

    @Autowired
    private WmUserMapper wmUserMapper;
    @Autowired
    private IUserClient userClient;

    /**
     * 登录
     *
     * @param dto
     * @return
     */
    @Override
    public ResponseResult login(WmLoginDto dto) {
        //1.检查参数
        if (StringUtils.isBlank(dto.getName()) || StringUtils.isBlank(dto.getPassword())) {
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID, "用户名或密码为空");
        }

        //2.查询用户
        WmUser wmUser = getOne(Wrappers.<WmUser>lambdaQuery().eq(WmUser::getName, dto.getName()));
        if (wmUser == null) {
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST);
        }

        //3.比对密码
        String salt = wmUser.getSalt();
        String pswd = dto.getPassword();
        pswd = DigestUtils.md5DigestAsHex((pswd + salt).getBytes());
        if (pswd.equals(wmUser.getPassword())) {
            //4.返回数据  jwt
            Map<String, Object> map = new HashMap<>();
            map.put("token", AppJwtUtil.getToken(wmUser.getId().longValue()));
            wmUser.setSalt("");
            wmUser.setPassword("");
            map.put("user", wmUser);
            return ResponseResult.okResult(map);

        } else {
            return ResponseResult.errorResult(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR);
        }
    }

    /**
     * 自媒体端用户审核
     *
     * @param wmUser
     */
    @Override
    public ResponseResult insertUser(WmUser wmUser) {
        //1、用户信息赋值
        WmUser user = new WmUser();
        BeanUtils.copyProperties(wmUser, user);
        //2、密码加盐+加密
        String pwd = wmUser.getPassword() + wmUser.getSalt();
        String newPwd = DigestUtils.md5DigestAsHex(pwd.getBytes(StandardCharsets.UTF_8));
        user.setPassword(newPwd);
        //3、查询数据库name是否存在
        Integer count = wmUserMapper.selectCount(Wrappers.<WmUser>lambdaQuery().eq(WmUser::getName, wmUser.getName()));
        if (count > 0) {
            //4、用户已存在，添加失败
            //远程调用驳回审核
            AuthDto authDto = new AuthDto();
            BeanUtils.copyProperties(user, authDto);
            userClient.authFail(authDto);
            authDto.setMsg("用户已存在，添加失败");
            return ResponseResult.errorResult(AppHttpCodeEnum.LOGIN_USER_ERROR);
        }
        //5、保存进数据库
        save(user);
        return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
    }
}